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Updated: Jul 6, 2026

From a Natural Product to Its Biosynthetic Gene Cluster: A Demonstration Using Polyketomycin from Streptomyces diastatochromogenes Tü6028
Published on: January 13, 2017
Crystallization and preliminary crystallographic analysis of a plant type III polyketide synthase that produces
Hiroyuki Morita1, Michikazu Tanio, Shin Kondo
1Mitsubishi Kagaku Institute of Life Sciences (MITILS), 11 Minamiooya, Machida, Tokyo 194-8511, Japan.
Abstract:
Benzalacetone synthase (BAS) from Rheum palmatum is a plant-specific type III polyketide synthase that catalyzes the one-step decarboxylative condensation of 4-coumaroyl-CoA with malonyl-CoA to produce the diketide 4-(4-hydroxyphenyl)-but-3-en-2-one. Recombinant BAS expressed in Escherichia coli was crystallized by the sitting-drop vapour-diffusion method. The crystals belong to space group P2(1), with unit-cell parameters a = 54.6, b = 89.6, c = 81.1 A, alpha = gamma = 90.0, beta = 100.5 degrees . Diffraction data were collected to 1.8 A resolution using synchrotron radiation at BL24XU of SPring-8.

